EVSE 3704 Series User manual

3704-001 Installation and User Manual February 6, 2019 Page i
Control Module Inc., EVSE LLC
State of the Art EVSE with Cable Management
User Manual and Installation Guide
Model 3704
Electric Vehicle Supply Equipment (EVSE)
3704-IG-001 Rev 1.2
November 2018
Electric Vehicle Supply Equipment (EVSE)
Model 3704 Family
For Wall and Pole Mounted Installations

3704-IG-001 Installation and User Manual Page ii
Table of Contents
Important Notes .............................................................................................................................................................................iv
Safety and Compliance........................................................................................................................................................................ iv
Limitation of Liability .......................................................................................................................................................................... iv
FCC Compliance Statement ................................................................................................................................................................. iv
Important ............................................................................................................................................................................................ iv
Exposure to Radio Frequency Energy .................................................................................................................................................. iv
No Accuracy Guarantee ...................................................................................................................................................................... iv
U.S. Patent Numbers:.......................................................................................................................................................................... iv
Copyright and Trademarks: ................................................................................................................................................................ iv
Instructions Pertaining To Risk of Fire or Electrical Shock ................................................................................................................v
Important Safety Instructions .............................................................................................................................................................. v
Instructions De Sécurité Importantes.................................................................................................................................................. vi
Introduction to Model 3704-A00XX EVSE Unit .................................................................................................................................1
Safety Features ....................................................................................................................................................................................1
Payment Options.................................................................................................................................................................................. 1
Communication Options..................................................................................................................................................................2
Pole-Mounted Connection ..............................................................................................................................................................2
Wall-Mounted Connection ..............................................................................................................................................................2
Remote Connection .........................................................................................................................................................................2
Additional Options ............................................................................................................................................................................... 3
Specifications .......................................................................................................................................................................................4
3704-Mounting Poles Product Ordering Chart.....................................................................................................................................5
Site Preparation...............................................................................................................................................................................6
Dimensions........................................................................................................................................................................................... 6
Site Selection ........................................................................................................................................................................................8
2010 ADA Standards for Accessible Design.......................................................................................................................................... 9
Pole-Mounting Options...................................................................................................................................................................... 11
Wall-Mounting Options .....................................................................................................................................................................12
Electrical Service Connections ............................................................................................................................................................ 13
Mounting the Model 3704 .............................................................................................................................................................15
Removing the Cover ...........................................................................................................................................................................15
Wall-Mounting 3704 EVSEs ...............................................................................................................................................................16
Single Wall-Mount .........................................................................................................................................................................16
Single or Dual Pole-Mounting The 3704 EVSE.................................................................................................................................... 18
Wiring the EVSE for Power................................................................................................................................................................. 19

3704-IG-001 Installation and User Manual Page iii
Wiring the EVSE for Serial Connections..............................................................................................................................................20
Replacing the Cover ...........................................................................................................................................................................21
Applying Operating Instructions ........................................................................................................................................................21
Installation Notes ..........................................................................................................................................................................23
Dip Switch Settings ........................................................................................................................................................................24
Operation ......................................................................................................................................................................................25
Testing and Fault Modes................................................................................................................................................................26
Status Indicator Chart ........................................................................................................................................................................27
User Maintenance .........................................................................................................................................................................28
Moving, Transporting, and Storage ...................................................................................................................................................28
Customer Support .........................................................................................................................................................................29
Warranty .......................................................................................................................................................................................30

3704-IG-001 Installation and User Manual Page iv
Important Notes
Safety and Compliance
This document provides instructions for installing the Charging Station Model 3704 Series. Before installation of the Charging
Station by licensed professionals, you should review this manual carefully and consult with a licensed contractor, licensed
electrician and trained installation personnel to ensure compliance with local building practices, climate conditions, safety
standards, and state and local codes.
The Charging Station should be inspected by a qualified installer prior to the initial use. Under no circumstances will
compliance with the information in this manual relieve the user of responsibility to comply with all applicable codes or safety
standards. This document describes the most commonly-used installation and mounting scenarios. If situations arise in which
it is not possible to perform an installation following the procedures provided in this document, contact Control Module Inc.,
EVSE LLC. Control Module Inc., EVSE LLC, is not responsible for any damages that may occur resulting from custom
installations that are not described in this document.
Limitation of Liability
In no event shall Control Module Inc., EVSE LLC, or its authorized distributors be liable for any indirect, incidental, special,
punitive, or consequential damages, including without limitation, lost profits, lost data, loss of use, cost of cover, or loss or
damage to the Watt Point Charging Station, arising out of or relating to the use or inability to use this manual, even if Control
Module Inc., EVSE LLC, or its authorized distributors have been advised of the possibility of such damages.
FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at their own expense.
Important
Changes or modifications to this product not authorized by Control Module, Inc., EVSE LLC, could affect the EMC compliance
and revoke your authority to operate this product.
Exposure to Radio Frequency Energy
The radiated power output of the ZigBee® radio (optional) in this device is below the FCC radio frequency exposure limits for
uncontrolled equipment. This device should be operated with a minimum distance of at least 7.8 inches (20 cm) between the
ZigBee antenna and a person’s body, and must not be co-located with any other antenna or transmitter by the manufacturer,
subject to the conditions of the FCC Grant.
No Accuracy Guarantee
Reasonable effort was made to ensure that the specifications and other information contained in this manual are accurate
and complete at the time of publication. The specifications and other information in this manual, however, are subject to
change at any time and without prior notice.
U.S. Patent Numbers:
US D733, 648 S; US 9,908,422 B2
Copyright and Trademarks:
Copyright 2014-2018 Control Module Inc., EVSE LLC. All rights reserved. This material is protected by the copyright laws of
the United States and other countries. It may not be modified, reproduced or distributed without the prior, express written
consent of Control Module Inc., EVSE LLC.
The EVSE LLC logo is the trademark of Control Module Industries, Inc.
ZigBee is a registered trademark of the ZigBee Alliance.

3704-IG-001 Installation and User Manual Page v
Instructions Pertaining To Risk of Fire or Electrical Shock
The following is a summary of safety concerns relevant to the installation and use of the Model 3704 EVSE Unit. Failure to
follow these safety instructions may lead to serious injury, death and/or damage to the equipment.
WARNING: is used to provide a warning of hazardous voltage and possibility of electric shock.
CAUTION: is used to provide awareness of important safety information in these instructions.
Important Safety Instructions
WARNING: Only qualified personnel should perform the installation. This installation must be performed in
accordance with all local electrical/building codes and ordinances. Follow lockout/tagout
procedures.
Improper connection of the equipment grounding conductor may result in a risk of electric shock.
Reference National Electrical Code, ANSI/NFPA 70 for proper sizing of the ground conductor.
Do not use this product if the flexible power code or EV cable are frayed, have broken insulation, or
show any signs of damage.
CAUTION: This device is intended to be used to charge vehicles that do not require ventilation during charging.
To reduce the risk of fire, connect only to a dedicated circuit with 40A maximum branch circuit over–
current protection in accordance with the National Electrical Code, ANSI/NFPA 70.
(For Zigbee equipped units)
To satisfy FCC RF exposure requirements for mobile transmitting devices, a separation distance of 7.8
inches (20 cm) or more should be maintained between the antenna of this device and persons during
device operation. To ensure compliance, operations at closer than this distance is not
recommended. The antenna used for this transmitter must not be co-located in conjunction with
any other antenna or transmitter.
Additional considerations which will contribute to safe operation of this unit include the following:
DO:
Read all instructions before using this product.
The device should be supervised when used around children.
In case of a problem, contact your installer or CMI Customer Support.
DON’T:
Put fingers into the electric vehicle connector.
Use this product if the enclosure or the EV connectors are broken, cracked, open or show any other indication
of damage.
Attempt to repair or service the unit yourself.
SAVE THESE INSTRUCTIONS

3704-IG-001 Installation and User Manual Page vi
Instructions De Sécurité Importantes
AVERTISSEMENT: sert à fournir une alerte de tensions dangereuses et possibilité de choc électrique.
ATTENTION : est utilisé pour fournir la sensibilisation des renseignements importants dans ces instructions.
INSTRUCTIONS DE SÉCURITÉ IMPORTANTES
AVERTISSEMENT: Seul le personnel qualifié doit effectuer l'installation. Cette installation doit être effectuée
conformément à tous les codes électrique/bâtiment locaux et ordonnances. Suivre les
procédures de verrouillage/verrouillage.
Connexion inadéquate de l'équipement échouement du chef d'orchestre peut entraîner un
risque de choc électrique. Code National de l'électricité, ANSI/NFPA 70 pour le
dimensionnement bon chef d'orchestre au sol de référence.
Ne pas utiliser ce produit si le code de la puissance souple ou l'EV sont effiloché de câble, ont
brisé isolant ou présentent pas de signes de dommages.
ATTENTION: Ce dispositif est destiné à être utilisé pour charger les véhicules qui ne nécessitent pas de ventilation
pendant la recharge.
Afin de réduire le risque d'incendie, se connecter uniquement à un circuit dédié avec 40 a maximum
des branches circuit over–current protection conformément aux dispositions du Code électrique
National, ANSI/NFPA 70.
(Pour les unités de Zigbee équipé)
Pour satisfaire les exigences de l'exposition du FCC RF pour des périphériques mobiles de
transmission, une distance de séparation de 20 cm ou plus devrait être maintenue entre l'antenne de
ce dispositif et de personnes au cours de l'opération de l'appareil. Afin d'assurer la conformité des
opérations au plus près que cette distance n'est pas recommandée. L'antenne utilisée pour cet
émetteur ne doit pas être colocalisé conjointement avec une autre antenne ou éme.
Voici d'autres considérations qui contribueront à la sécurité de fonctionnement de cette unité:
DO:
Lire toutes les instructions avant d'utiliser ce produit.
Le dispositif devrait être supervisé lorsqu'il est utilisé autour des enfants.
En cas de problème, contactez votre installateur ou soutien à la clientèle CMI.
NE PAS:
Mettre les doigts dans le connecteur de véhicule électrique.
Utiliser ce produit si l'enceinte ou les connecteurs EV sont cassées, fissuré, ouvrir ou afficher toute autre indication
de dommages.
Tenter de réparer ou d'un service de l'unité de vous-même.
ENREGISTREZ CES INSTRUCTIONS

3704-001 Installation and User Manual February 6, 2019 Page 1
Introduction to Model 3704-A00XX EVSE Unit
The Model 3704 Electric Vehicle Supply Equipment (EVSE) is a 7.2 KW wall- or pole-mounted EVSE with Auto CoilTM cable
management retraction, capable of providing up to 30A at 208-240VAC, single phase, 50 or 60 Hz. It is configurable as a
single wall mount, single or dual pole mount. This unit complies with the SAE J1772 specifications for supplying electrical
power to a J1772-compatible Electric Vehicle (EV). The Model 3704 conveniently coils the 20-foot cable internally when not
in use. The Model 3704 is capable of being controlled remotely to apply, reduce or disconnect power to the electric vehicle,
and measures both voltage and current being supplied to the EV. The 3704 communicates directly with a Payment or
Gateway Module, and five status lights clearly indicate the state of the charging operation.
Safety Features
Tamper Resistent - The J1772 power cord and connector are locked mechanically in the storage position.
Jam Resistent - If you pull the charging cable while it is retracting or if the cable gets caught on anything, cable
retraction will stop. The cable will make one additional attempt to retract. Thereafter, pressing and
releasing the switch on the J1772 connector (Figure 19) will restart the cable retraction process
Spark Resistent - Electrical power is not applied to the power connector until the J1772 connector is fully inserted into
the power inlet on the Electric Vehicle and communication between the vehicle and charger has been
established. When the switch is pressed on the J1772 connector, voltage is removed.
Shock Resistent - The Model 3704 EVSE is equipped with a Ground Fault Circuit Interrupter (GFCI) which will disconnect
the electrical voltage from the power cord and connector, should current leakage to ground exceed
20 mA. The GFCI circuit is automatically tested at the start of each charge sequence. The GFCI will
attempt three re-closures to see the ground fault cleared before reporting a problem.
Over Current - The Model 3704 EVSE, when in use, continuously monitors the current being delivered to the EV. Should
the current exceed 32A for 15 seconds, the Model 3704 EVSE will disconnect the power to the EV before
the breaker trips. After disconnecting, the 3704 will auto-reset.
Low-Line - The source voltage to the Model 3704 EVSE is continuously monitored while in use. Should the voltage
drop below 180 VAC, the EVSE will disconnect the voltage from the EV to prevent damage to the EV’s
electronic circuits. When the voltage returns to above 200 VAC, the power will be restored to the EV.
Cold Load Start –If power fails while the Model 3704 EVSE is connected and charging an EV, charging will automatically
resume when power is restored. No user intervention is required. The charging will however, be
randomly delayed from 2 to 5 minutes to prevent the power grid from incurring a large power surge.
Plug-Out Detection - The model 3704 EVSE is equipped with a Plug Out Detection circuit that identifies when the connector
is attached to the electric vehicle. This allows the EVSE to immediately remove electric power from the
electric vehicle before the connector is totally removed from the vehicle inlet.
Disconnect Switch - The 3704 is equipped with an internal disconnect switch for locally shutting off power in the event the
unit needs to be serviced or inspected.
Payment Options
A Payment Module is used with the 3704 EVSE in fee-based electric vehicle charging environments to facilitate commercial
transactions. The 3725-104 Payment Module is engineered to work with the 3704 EVSE, whether the EVSE is single- or dual-
mounted on a pole, or wall-mounted. The Payment Module and EVSE can be located on the same pole, nearby when wall-
mounted, or mounted remotely from each other. Refer to the 3725 User Manual and Installation Guide for more information
about the Payment Module.
Note: A Gateway Module (Model 3727-200) can be used in place of the Payment Module when two-way communication is
required without payment functions. . Refer to the 3727 User Manual and Installation Guide for more information
about the Gateway Module.

3704-IG-001 Installation and User Manual Page 2
Communication Options
There are two communication options available for facilitating communication between the EVSE and payment or gateway
systems:
Serial Connection
A serial connection can be established between one or more 3704 EVSEs and a Payment Module or Gateway. A single serial
Payment Module or Gateway can support from one to eight EVSEs, depending upon its configuration.
ZigBee Connection
The 3704 will also communicate to a Gateway or Payment Module using the ZigBee Mesh protocol, allowing wireless
connections. ZigBee networks are secured by 128-bit symmetric encryption keys, so security is assured. A single ZigBee
Payment Module or Gateway can support up to 32 remote EVSEs.
Pole-Mounted Connection
When the 3704 EVSE(s) and the 3725-104 Payment Module are mounted together on a pole, typically, an internal serial cable
connects each EVSE to the Payment Module. The Payment Module then connects to an external network via a Cellular
modem or a hard-wired Ethernet connection. The Cellular modem securely transmits encrypted payment data to and
receives authorizations from external PCI-compliant processors. Communication can also link the EVSE network with third-
party network management providers for reporting and call center support.
Wall-Mounted Connection
A configuration where it is most convenient to wall-mount the 3704 EVSEs typically means the 3725-104 Payment Module is
also wall-mounted nearby. Like the pole-mounted option, connection of EVSE(s) and Payment Module is made using either
serial-cable connections, or a ZigBee Mesh network.
The Payment Module in this configuration operates identically to that described above for the pole mounted unit.
Remote Connection
Remote connections between 3704 EVSEs and a Payment Module can be made, typically using a ZigBee Mesh network. This
allows the EVSEs and Payment Module to be located a greater distance from each other, and also a greater number of EVSEs
to work with a single Payment Module. (See chart below).
EVSE to Payment Module Connection
EVSE to Payment Module Distance
EVSEs per Payment
Module
Serial
Cable length should be no more than 180 feet from
any EVSE to the Payment Module
8
ZigBee Mesh Network
Cable Length
Indoors: 30 –65 feet (Depending on walls to
penetrate.)
Outdoors: Up to 4800 feet (Line-of-sight,
depending on signal strength and
environmental conditions.)
32
NOTE: Administrative data can be transmitted to a remote laptop computer (via the Gateway with a ZigBee Mesh network
option only) without accessing an external network.

3704-IG-001 Installation and User Manual Page 3
Additional Options
Data Router: The Data Router (Figure 15) in the charger is supplied with a basic ON/OFF keyboard for either free use, or use
in conjunction with an optional Payment or Gateway Module. The charger can also be equipped with a Data
Router with RFID card activation (Figure 16) to be used in conjunction with an optional Payment or Gateway
Module, as well as an optional Handbook 44-compliant display module (Figure 16A) to display Kilowatts (kW)
used and the associated cost.
EUMD: The Handbook 44-compliant Data Router displays the data collected by an optional EUMD Module (End-User
Measurement Device), which is an internal revenue-grade meter that measures power dispersed to the vehicle
during a session with 1% or better accuracy. The EUMD can also be installed and used by itself to send power
measurements back to the host.
Power Share: A Power Share cable can be installed to allow two 3704 chargers mounted on a pole to operate off a single
service panel breaker. If a 40A breaker is installed, both chargers can be used to provide a maximum of 16A to
the vehicles (or the full 30A when only one charger is being used). If a 50A breaker is installed, both chargers
can be used to provide a maximum of 20A to the vehicles (or the full 30A when only one charger is being used).
If you choose to install this option, you will need to set dip switch position 8. See Dip Switch Settings on page 24
for more information.

3704-IG-001 Installation and User Manual Page 4
Specifications
Product Code
Product Code
3704-A00XX
Electrical*
Voltage
Current (Rated)
Current (Simulated Level 1)
208-240 VAC
30A
7A@208-240 VAC (On Command)
Connections
Line 1 and 2, Ground
Required Service (Breaker Panel)**
2-pole 40A breaker Non GFCI on a dedicated circuit/20A Switchable by Dip
Settings
Stand By Power (Per EVSE)
Max Rated Power
Less than 10W typical (without communication/Payment Module/Gateway
operating)
7.2kW
Safety Features
Over Current Disconnect
32A
Surge Protection
6KV @ 3000A
Ground Fault
Internal 20 mA CCID with auto re-closure (three attempts)
Compliance
Safety
IEC/UL/CSA C22.2 61010-1, UL2594, UL2231-1, UL2231-2, NEC Article 625, SAE J1772
EMC
FCC Part 15 Class A, Canadian ICES-003
Communications
ZigBee
FCC ID: MCQ-PS2CTH, IC: 1846A-PS2CTH
Environmental
Operating Temperature
-22° to 122° F (-30° C to 50° C) ambient
Operating Humidity
Up to 95% non-condensing
NEMA Rating
NEMA 3R
General
Dimensions
37 in (h) x 10.5 in (w) x 10.5 in (d) (Excluding Pole)
Weight
Mounting
32 lbs. (Excluding Pole)
Wall, Surface-mounted Pole
*Observe all required Lockout/Tagout procedures while making any electrical connections or servicing the unit.
**Dual pole-mounted chargers requires two breakers.

3704-IG-001 Installation and User Manual Page 5
3704-Mounting Poles Product Ordering Chart
If using a pole mounted configuration, select the appropriate Pole Kit based on EVSE type (single/dual) and mode of communication
(Zigbee/Serial) to the Payment/Gateway Module. Different poles are selected if a Payment Module/Gateway is on the same pole as
the EVSE, as noted below. EVSE, pole, Gateway/Payment modules are separate line items on the purchase order.
Single Pole Kits
ZigBee or On/Off
No (or Remote) Payment or Gateway
3841-300
Serial
No (or Remote) Payment or Gateway
3841-301
Serial or ZigBee
Compatible with Payment or Gateway
using Cellular Host Comm.
3841-302
Serial or ZigBee
Compatible with Payment or Gateway
using Ethernet Host Comm or Remote
Serial
3841-303
Dual Pole Kits
ZigBee or On/Off
No (or Remote) Payment or Gateway
3841-306
Serial
No (or Remote) Payment or Gateway
3841-307
Serial or ZigBee
Compatible with Payment or Gateway
using Cellular Host Comm.
3841-308
Serial or ZigBee
Compatible with Payment or Gateway
using Ethernet Host Comm or Remote
Serial
3841-309

3704-IG-001 Installation and User Manual Page 6
Site Preparation
Power must be located at each charging location and supplied by individual, dedicated 40A non-GFCI circuit breakers at the
breaker panel. A dual Model 3704 would require two circuit breakers. A qualified electrician or installer should provide local
power at each charging site, install conduit runs back to the main breaker panel and make final wiring connections for power
at the breaker panel.
Dimensions
Refer to Figure 1A for wall-mounting dimensions of the 3704 and Figure 1B for pole-mounting dimensions.
Figure1A
10 –½”
“1/4 “”
10 –½”
37”

3704-IG-001 Installation and User Manual Page 7
Figure 1B
EVSE #1
EVSE #2

3704-IG-001 Installation and User Manual Page 8
Site Selection
The Model 3704 is designed to be located for a specific parking lane or pair of lanes, if desired (Figure 2). The power cable
may be extended up to twenty feet (20'), easily reaching the front, rear or side of the Electric Vehicle being serviced. The site
for the EVSE should be selected where it is easily seen, and as close as possible to the power source.
Figure 2

3704-IG-001 Installation and User Manual Page 9
2010 ADA Standards for Accessible Design
According to the 2010 Americans With Disabilities Standards for Accessible Design, “Each facility or part of a facility
constructed by, on behalf of, or for the use of a public entity shall be designed and constructed in such manner that the
facility or part of the facility is readily accessible to and usable by individuals with disabilities, if the construction was
commenced after January 26, 1992.”
While installers should be knowledgeable about all aspects of the requirement, several critical paragraphs and illustrative
figures (Fig. 3A-3E) are referenced below to assist with locating the EVSE to meet reach and obstruction requirements of the
Act. When properly located relative to the curb, the Model 3704 is compliant with all aspects of the following ADA
paragraphs.
303.2 Changes in Level –Vertical
Changes in level of ¼ inch (6.4 mm) high maximum shall be
permitted to the vertical.
Figure 3A
308.2.1 Forward Reach –Unobstructed
Where a forward reach is unobstructed, the high forward
reach shall be 48 inches (1220 mm) maximum and low
forward reach shall be 15 inches (380 mm) minimum above
the finish floor or ground.
Figure 3B
308.2.2 Forward Reach –Obstructed High Reach
Where a high forward reach is over an obstruction, the
clear floor space shall extend beneath the element for a
distance not less than the required reach depth over the
obstruction. The high forward reach shall be 48 inches
(1220 mm) maximum where the reach depth is 20 inches
(510 mm). Where the reach depth exceeds 20 inches (510
mm), the high forward reach shall be 44 inches (1120 mm)
maximum and the reach depth shall be 25 inches (635 mm)
maximum.
Figure 3C

3704-IG-001 Installation and User Manual Page 10
308.3.1 Side Reach –Unobstructed
Where a clear floor or ground space allows a parallel
approach to an element and the side reach is
unobstructed, the high side reach shall be 48 inches (1220
mm) maximum and the low side reach shall be 15 inches
(380 mm) minimum above the finish floor or ground.
Figure 3D
308.3.2 Side Reach –Obstructed High Reach
Where a clear floor or ground space allows a parallel
approach to an element and the high side reach is over an
obstruction, the height of the obstruction shall be 34
inches (865 mm) maximum and the depth of the
obstruction shall be 24 inches (610 mm) maximum. The
high side reach shall be 48 inches (1220 mm) maximum for
a reach depth of 10 inches (255 mm) maximum. Where
the reach depth exceeds 10 inches (255 mm), the high side
reach shall be 46 inches (1170 mm) maximum for a reach
depth of 24 inches (610 mm) maximum.
Figure 3E
309 Operable Parts
309.1 General –Operable parts shall comply with 309.
309.2 Clear Floor Space –A clear floor space or ground
space complying with 305 shall be provided.
309.3 Height –Operable parts shall be placed within one or
more of the reach ranges specified in 308.
309.4 Operation –Operable parts shall be operable with
one hand and shall not require tight grasping, pinching, or
twisting of the wrist. The force required to activate
operable parts shall be 5 pounds maximum.
NOTE: In order to remain ADA-compliant, from the user’s perspective, the center of the 3704’s Data Router MUST be no
more than 48 inches from the ground when mounted to the pole, regardless of how the pole is mounted to the
ground, or to a wall (Figure 1B).

3704-IG-001 Installation and User Manual Page 11
Figure 4B
Figure 4A
Pole-Mounting Options
Whether using a CMI-supplied pole or a customer-supplied (electrically grounded per state and local codes) pole, mount the
pole directly to a ground-level flat surface which should accommodate the weight and pull force of the EVSE(s). The weight of
a single 3704 pole is 45.7 pounds, while a dual pole weighs 87.7 pounds. A concrete sidewalk is a typical mounting surface. A
one-inch conduit (to support AC wiring from the breaker panel) is typically brought up into the center bottom of the pole. If
any communication to the 3704 is serial or Ethernet (if a Payment Module is installed), an additional ¾ inch conduit needs to
be brought up into the center bottom of the pole. If a concrete base is being poured to support the 3704 EV charger, the
suggested size should be 3'x3'x4" minimum. However, whatever the mounting surface and method, it should conform to
town/state/federal building codes.
Note: It is not recommended to mount the 3704 pole directly to asphalt. If required, cut a section of the asphalt and pour a
concrete base.
In areas where frost is a concern, you can also follow these steps to mount the pole utilizing an 18" wide Sonotube, Schedule
40 conduit, four 1/2" J-bolts 12" long, rebar, ground rod and #8 bare copper wire, cast in place a mounting base, as per
dimensions shown in Figure 4B. Conduit considerations are the same as above.
NOTE: In order to remain ADA-compliant, from the user’s perspective, the center of the 3704’s Data Router MUST be no
more than 48 inches from the ground when mounted to the pole, regardless of how the pole is mounted to the
ground, or to a wall (Figure 1B).

3704-IG-001 Installation and User Manual Page 12
Wall-Mounting Options
There are 4 mounting-screw holes in the rear mounting assembly of the 3704 EVSE, two at the top and two at the bottom.
Using the mounting hole pattern depicted (Figure 5), drill pilot holes if necessary. The mounting hardware/holes should be
designed around #10-sized screws. Ensure the hole pattern is plumb and level. NOTE –Conduit(s) enters through the bottom-
center, conduit-access hole.
NOTE: In order to remain ADA-compliant, from the user’s perspective, the center of the 3704’s Data Router MUST be no
more than 48 inches from the ground when mounted to the pole, regardless of how the pole is mounted to the
ground, or to a wall (Figure 1B).
Optional AC power access
hole for wires brought
through the wall
Figure 5
Optional Serial Communication
access hole for wires brought
through the wall

3704-IG-001 Installation and User Manual Page 13
Electrical Service Connections
(DUAL UNIT SHOWN)
Note: Observe all required Lockout/Tagout procedures while making any electrical connections or servicing the Model 3704.
Caution:
The two phases used must each measure
120V to Neutral. Earth Ground must be
connected to Neutral at only one point,
usually at the Service Entry Breaker Panel.
Caution:
This EVSE is a single-phase device. Do not connect
all 3 phases of a 3-phase feed!!! You may use any
two phases of a 3-phase, Wye-connected feed !
The center-point of the 3 phases (usually used as
Neutral) must be grounded somewhere in the
system. A current-carrying Neutral is not needed by
the Model 3704. The two phases used must each
measure 120V to Neutral.
1) 220/240 VAC, Single Phase Transformer:
2) 208 VAC 3-Phase Wye Transformer:
Note: A separate 40 Amp. Non-GFCI breaker is required for each individual EVSE.
Model 3704
Figure 6A
Figure 9B
(See Fig. 7B)
Attention:
Les deux phases utilisés doivent
chaque 120V mesure au Neutre.
Motif de la terre doit être connecté
au Neutre à un seul point,
habituellement à l'entrée de
Service Breaker Panel.
Attention:
Cette EVSE est un appareil monophasé. Ne pas
connecter tous les 3 phases d'un flux de phase 3!!!
Vous pouvez utiliser tout deux phases d'une phase
3, Wye connecté nourrir ! Le point central des 3
phases (généralement utilisé comme Neutre) doit
reposer quelque part dans le système. Il n'est pas
nécessaire de Neutre porteurs de courant par le
Modèle 3704. Les deux phases utilisés doivent
chaque 120V mesure au Neutre.
Model 3704
Figure 6B

3704-IG-001 Installation and User Manual Page 14
3) 240V Delta Transformer:
Caution:
When using a Delta-style power source
for the EVSE Model 3704, there must be a
center tap. Only the two phases on either
side of the center tap (L1 and L2) can be
used and each must measure 120V to
Neutral. If this is not done, the ground-
fault protection will not function properly.
Also, the center tap must be connected to
ground.
Note: A separate 40 Amp. Non-GFCI breaker is required for each individual EVSE.
Figure 6C
Attention:
Lorsque vous utilisez une source
d'alimentation de Delta-style pour le modèle
de EVSE 3704, il doit y avoir un robinet
center. Seuls les deux phases de chaque côté
de l'eau du robinet center (L1 et L2) peuvent
être utilisés et chacun doit mesurer 120 v au
Neutre. Si cela n'est pas fait, la protection du
sol-faute ne fonctionnera pas correctement.
Aussi, le robinet du Centre doit être
connecté au sol.
Model 3704